Rotary engine.



IE. WYLE.

ROTARY ENGINE.

APPLICATION rum) nun. a1, 1910.

986 1 1 6, Patented Mar. 7, 19-11.

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LQ\/ m F. WYLE. v ROTAB'YENGINEF APPLICATION FILED IAR. 31, 18.10,

986,1 1 6, Patented Mar. 7, 1911.

4 SHEETS-SHEET 2.

F. WYLE.

V ROTARY ENGINE. APPLIOATIOI 311.21) 11.31, 1910.

Patented Mar.7,1911.

4 Sums-sum a.

ROTARY ENGINE.

To all whom it may concern: Be it known that I, FRANK WYLE, a cit1- zen of the United States, residing at St.

type, and has for its object to provide a device of this nature extremely simple in construction and adapted to be manufactured at a comparatively low cost, while being at the same time efficient in operation.

A further object is to provide a casing of a simple construction adapted to be assembled with a minimum amount of labor and expense for manufacture.

Other objects and advantages will be apparent from the following description, and it will be understood that changes in the specific structure shown and described may be made within the scope of the claims without departing from the spirit of the invention.

In the drawings forming a part of this specification, and in which like numerals of reference indicate similar parts in the several views, Figure 1 is a side view of the device showing the valve mechanism, Fig. 2 is a horizontal sectional view through the engine, Fig. 3 is a perspective view of the rotor, Fig. 1 is a cross sectional view of the assembled device, Fig. 5 is a vertical sectional view centrally of the device, showing the inlet and exhaust ports, Fig. 6 is a de tail sectional view showing the reversing mechanism.

Referring to the drawings, there is shown a casing A, comprising a central body member 10, carried upon a suitable base casting 11, and having a transversely extending chamber 12, opening on opposite sides thereof. Secured to opposite sides of the base member 10, there are the plates 13, having the circular opening 14: therethrough, as shown. Secured outwardly of the plates 13, there are suitable journal plates 15, having bearings 16 therein concentric with the opening 14 through the supplementary plate 13.

The outer wall portion 17 of the chamber 12 is curved in an arc coincident with that of the opening 14 through the plate 13, but at its upper and lower portions is curved sharply and eccentrically inward as at 18, these converging portions leading to a concentrically curved inner wall portion 19, as

UNITED STATES PigrENT OFFICE.

FRANK WYLE, OF ST. LOUIS, MISSOURI:

Specification of Letters Patent.

Application filed March 31, 1910.

Patented Mar. 7, 1911.

Serial No. 552,597.

shown, this wall being concentric with the axis of the opening 1 1 and the curved portion 17 of the chamber.

Engaged revolubly in the openings of the journal plates, there is a shaft 20 upon which there is carried the rotor B. prises a central drum portion 21, having its periphery disposed snugly against the curved surface 19, and having at opposite ends the enlarged flange portions 22, the inner faces of which lie snugly against the outer faces of; the member 10, and the peripheries of which are snugly disposed within the opening 14: of the plate 13. Extending diametrically through the rotor 13, there is a passage. Radial guide grooves 32 are formed in the inner faces of the flanges, and in alinement with the passage. Slidable in the piston passage and in said grooves there are two piston members 0 disposed at opposite sides of the rotor and completely closing the passage. One of the pistons is provided with recesses on its inner edge adapted to receive therein two projecting parallel. rods 23, around which are disposed suitable springs 24 bearing oppositely against the piston members G and tending to force them apart.

, Opening into the chamber 12, there are suitable ports 25, from which extend parallel passages 26 adapted either for the ingress or egress of fluid power medium. The ports 25 are disposed upon a common side of the casing or journal plates 15.

Formed in the sides of the member 10 outwardly of the surfaces 18 and 19 of the chamber 12, there are suitable grooves 27 in which suitable packing rings 28 are set, to bear against the inner surfaces of the flanges of the rotor. Formed in the periphery of the rotor flanges 21, there is a circumscribing groove 30 in which there are carried resilient packing rings 31 hearing against the inner face of the plate 13. The shaft 20 projects oppositely outward of the journal plate 15, one end being adapted to carry a suitable gear or pulley (not shown) for the transmission of power, and the other carrying a double valve cam 32, of ovate shape arranged to actuate valve controlling members, as will now be described.

The passages 26 are provided with the vertical outwardly extending passages 35 intermediately of their length adapted to be closed by means of plug valves 36, operable by means of levers 37 disposed at one side of the casing adjacent the valve gear to The rotor com- .bearing against the opposite ends of a vertically disposed valve rod support 38 slidably supported for vertical movement in suitable brackets 39 carried upon the side of the casing. It should be noted that the arms 37 of the valves 36 are connected by a suitable link, one of the arms being extended to form an operating handle 37. It will thus be seen that upon operation of one valve 36 for opening thereof the other will be closed and the support 38 will at the same time be moved vertically.

Pivoted to the support 38 are the valve levers 40, each having a shorter portion projected inwardly respectively above and below the cam member 32 and provided with laterally projecting pins 41 carrying suitable cam engaging rollers 42 projected in the plane of the cam member 32 and arranged to be engaged by the opposite ends thereof successively when rotating. The levers have attached between the shorter portions a suitable spring member 43, under tension to draw the said shorter portions together and separate the longer portions. The longer portions are connected at their extremities by means of suitable links 45 to operating arms 16 on plug valves 47 controlling the passages 26 outwardly of the extensions 35. It will be understood however, that any other suitable form of valve may be used in place of the plug valves illustrated herewith and adapted to be controlled by a le- -ver carrying the cam as shown upon the stem of the valve 36 and others adapted to be controlled by the movement of the levers 10, the present valve being merely shown as the simplest mechanical development of the device. Leading to the valves 47, are opposite branches 4L7 of a supply pipe 18, leading from any suitable source of fluid energy.

\Vith the support 38 at either limit of its movement, only the lever 40 adjacent its opposite end will be operative. It will thus be seen that in use when the lower of the valves 36 is open and the upper one closed, the lever 10 controlling the upper valve 4:7 leading to the upper passage 26 adjacent .the closed valve 36 will be operated, the

other remaining closed under the action of the spring. There will always be one of the piston members O disposed in position to receive the pressure of steam admitted from either of the ports 25, the opposite port serving as an exit for the vapor in front of such piston, which is admitted through the passages 26 and 35 to the open valve 36. The outer ends of the pistons C engaging the inclined surfaces 18 of the chamber 12, are forced inwardly until they pass the ports 25 on the far side of the chamber 12, when they engage the concentric surface 19 and are retained stationary while the opposite piston having passed the port 25 on the near side of the chamber 12, is allowed to be extended outwardly against the adjacent curved surface 18 and the wall 17, under action of the springs, as will be apparent.

The disposition of the pistons C in the same passage with common springs to maintain them in extended position, is of great advantage in combination with the difference in the radial distances of the surfaces 19 and 17 from the axis of the rotor, for the reason that when one of the pistons is fully extended, the other is fully retracted or pressed inward; their movement is thus practically coincident, and the springs main- .tained under an even compression throughout the movement of the pistons. It will also be noted that in the valve mechanism one spring is utilized to maintain both of the valve levers 40 in closed position after engagement by the cam member. The cam member should be so disposed upon the shaft 20 that it will actuate the valve levers 10 just at the instant when the piston member 0 which is to receive the pressure passes over the respective ports 25, and the cam should be so proportioned as to allow closure of the valves at a proper period before the exhaust port is reached to allow the expansion of steam to become eflective in the rotation of the rotor. It will of course be understood that the relation of the cut off to the position of the rotor may be governed by using different forms of cam members, which may be readily attached or detached.

What is claimed is:

1. In a device of the class described, the combination with a casing and rotor revoluble therein, a cam member movable with the rotor, a vertically sliding member, levers pivoted to said member and disposed transversely thereacross, the portions of said levers on one side of said pivots extending in the path of the cam and adapted to be moved thereby, resilient means between the said portions of said arms for contraction thereof against the actionof the cam, steam valve portions of extending levers on the opposite side of said pivot arms, and connections between the last named portions of the levers and said valves for alternate operation of said valves under action of the cam, and means for moving the carrier longitudinally to opposite limits of its movement.

2. A device of the class described com prising a casing, said casing having a chamber therein, a rotor mounted eccentrically within the chamber, radially movable pistons carried by the rotor, said casing having ports opening into the chamber, said casing also having passages leading from the ports,

said passages having exhaust extensions and inlet extensions, one set of valves disposed in the exhaustextensions, a second set of valves disposed in said inlet extensions, means for operating said first set of valves, said means including spaced eccentrics, a cam member on the rotor, and exteriorly of the casing, a vertically sliding member between and engaging said eccentrics, for movement of the sliding member, levers pivoted upon the sliding member, the ends of said levers on one side of their pivots being disposed for engagement by said cam member, resilient means between the levers for forcing one or the other of said levers against said cam, and connections between the opposite ends of said levers and said I second set of valves.

3. In a rotary engine, a casing having a chamber therein, and steam passages opening into one side thereof, a rotor eccentrically mounted in said chamber, a common connection to the steam passages externally of the casing, valves in the said passages, "eccentrics on the second named valves, a slidable member between and engaging said eccentrics, a cam on the rotor, levers pivoted to the slidable member, resilient connections between said levers, and the first named valves, and connections between said eccen- 3o tries to cause their simultaneous movement to cause one or the other of said levers to be thrown into the path of said cam. I

l. In a rotary engine including a casing having inlet and exhaust passages and an eocentrically mounted rotor, valves in the inlet and exhaust passages, eccentrics on the exhaust valves, a slide mounted between and engaging said eccentrics, levers pivotally mounted on the slide, a cam on the rotor connections between one end of each of said levers, and the inlet valves, resilient connections between the opposite ends of the levers, and means for simultaneously opening and closing the other of said exhaust valves whereby one or the other of said levers is thrown into the path of said cam to cause the operation of one of said inlet valves.

In testimony whereof I aiiix my signa ture, in presence of two witnesses.

FRANK VVYLE.

Witnesses JOHN W. LEWIS, ANNA R. MARTIN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

